condition mean min max ZT0-3 0.8414649999999999 0.8414649999999999 0.8414649999999999 ZT4-7 0.48687899999999995 0.48687899999999995 0.48687899999999995 ZT8-11 1.0144685 1.0144685 1.0144685 ZT12-15 1.2136075 1.2136075 1.2136075 ZT16-19 1.083095 1.083095 1.083095 ZT20-23 0.6506894999999999 0.6506894999999999 0.6506894999999999